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A charge of 9.0 μC is in the center of a cube. The electrical flow that...

A charge of 9.0 μC is in the center of a cube. The electrical flow that passes through the surface of one side of the cube is

a.

   4.5 x 105 N m2/C
b.

9.0 x 105 N m2/C
c.

1.5 x 105 N m2/C
d.

6.0 x 104 N m2/C

ii- A conductive sphere 5.0 cm in diameter has an electric field facing outward. The electric field is 5.0 cm from the surface and is 100 N / C. The surface charge density of the sphere is:

.

a . 8.0 x 10-9 C/m2
b.

1.5 x 10-8 C/m2
c.

3.5 x 10-9 C/m2
d.

2.2 x 10-10 C/m2
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